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Wikipedia

DeLorean time machine

February 18, 2023

In the Back to the Future franchise, the DeLorean time machine is a time travel device made by retrofitting a DMC DeLorean vehicle with a flux capacitor, which allows for time travel when it hits 88 miles per hour.

DeLorean Time Machine
Back to the Future franchise element
Side view of the DeLorean Time Machine
PublisherAmblin Entertainment
First appearance
Created byRobert Zemeckis
Bob Gale
GenreScience fiction
In-universe information
TypeTime machine
FunctionAllows the occupants to travel through time along with the car
AffiliationMarty McFly
Emmett Brown

Operation

The control of the time machine is the same in all three films. The operator is seated inside the DeLorean (except the first time, when the remote control is used), and turns on the time circuits by turning a handle near the gear lever, activating a unit containing multiple fourteen- and seven-segment displays that show the destination (red), present (green), and last departed (yellow) dates and times. After entering a target date with the keypad inside the DeLorean, the operator accelerates the car to 88mph (142km/h), which activates the flux capacitor. As it accelerates, several coils around the body glow blue/white while a burst of light appears in front of it. Surrounded by an electrical current similar to a Tesla coil, the whole car vanishes in a flash of white/blue light seconds later, leaving a pair of fiery tire tracks. A digital speedometer is attached to the dashboard so that the operator can accurately gauge the car's speed. Various proposals have been brought forth in the past by fans of the movie franchise for why the car has to be moving at 88 mph to achieve temporal displacement,[1] but actually the production crew chose the velocity simply because they liked how it looked on the speedometer, modified for the movie.[1] The actual speedometer on the production DeLorean's dashboard only goes up to 85 mph, and the car itself was criticized for being underpowered.

Observers outside the vehicle see an implosion of plasma as the vehicle disappears, leaving behind a trail of fire aligned with the DeLorean's tires (which can also appear in midair), while occupants within the vehicle see a quick flash of light and instantaneously arrive at the target time in the same spatial location (relative to the Earth) as when it departed. In the destination time, immediately before the car's arrival, three large and loud flashes occur at the point from which the car emerges from its time travel. After the trip, the exterior of the DeLorean is extremely cold, and frost forms from atmospheric moisture all over the car's body. Vents on the back heat the vehicle after time travel.

The DeLorean suffers assorted malfunctions and damage over the course of the trilogy. In the first film, the car has starter problems and has a hard time restarting once stopped, much to Marty's repeated frustration.[2] In the second film, the destination time display malfunctions and begins to show a series of random dates, causing Doc to be sent back to 1885 when the DeLorean is struck by lightning with him inside.[3] In the third film, a note left by Doc's 1885 self reveals that the DeLorean's flying circuits (added by him in 2015) were destroyed by the strike. After Marty travels back to 1885, the fuel line and fuel injection manifold both suffer damage, leaving the car unable to move under its own power.[4]

 
A back view of the DeLorean time machine

The time machine is electric and requires a power input of 1.21 gigawatts (1,620,000 hp) to operate, originally provided by a plutonium-fueled nuclear reactor.[2] In the first film, following Marty's accidental trip from 1985 to 1955, Doc has no access to plutonium in 1955, so he outfits the car with a large pole and hook in order to channel the power of a lightning bolt into the flux capacitor and send Marty back to 1985.[2] During Doc's first visit to 2015, he has the machine refitted to fly in addition to standard road driving, and he replaces the nuclear reactor with a Mr. Fusion generator that uses garbage as fuel.[2][3]

Although the Mr. Fusion unit provides the required power for the time machine, the DeLorean is still powered by an internal combustion engine for propulsion. The fuel line is damaged during Marty's trip to 1885 in Back to the Future Part III; after he and Doc patch it, they attempt to use whiskey as a replacement fuel since commercial gasoline is not yet available. The test fails, damaging the car's fuel injection manifold and leaving it unable to travel under its own power.

Doc and Marty consider options to reach the required 88 mph (such as pulling it with horses, which fails because the car barely breaks 30 mph) and ultimately settle on pushing the car with a steam locomotive. They replace the DeLorean's standard wheels with a set designed to mate with train rails. For the extra power needed to push it up to speed, Doc adds his own version of "Presto Logs" (a chemically treated mixture of pressed wood and anthracite) to the locomotive's boiler and chooses a location with a straight section of track long enough to achieve 88 mph.[4]

Jigowatts

The power required is pronounced in the film as "one point twenty-one jigowatts",[2] with a jigowatt referring to "one billion watts". The spelling of jigowatts is used in the script[5] and was also the spelling used in the closed-captioning in earlier home video versions of the film. However, the correct spelling is "gigawatts". Although rarely used, the "j" sound at the beginning of the SI prefix "giga-" is an acceptable pronunciation.[6][7] Later versions of closed captioning, such as in the 2020 DVD Trilogy release have corrected the spelling to gigawatts. In the DVD commentary for Back to the Future, Bob Gale states that he had thought it was pronounced this way because it was how a scientific adviser for the film pronounced it.[8] The "jigowatts" spelling is used by Alan Dean Foster in the novelizations of the second and third films.

Equipment

Flux capacitor

 
The Flux Capacitor as seen in a replica DeLorean Time Machine.

The flux capacitor, which consists of a rectangular-shaped compartment with three flashing Geissler-style tubes arranged in a "Y" configuration, is described by Doc as "what makes time travel possible". The device is the core component of the time machine.[2]

As the time machine nears 88 mph, light coming from the flux capacitor begins pulsing more rapidly until it becomes a steady stream. Doctor Emmet Brown originally conceived the idea for the flux capacitor on November 5, 1955, when he slipped on the edge of his toilet while hanging a clock in his bathroom and hit his head on the sink. In 1955 "Doc" had named the flux capacitor the "Flux Compresser" as shown on 1955 "Doc's" diagram [2] A similar, but possibly steam-powered, flux capacitor is also seen in the chimney headlamp of Doc's second time machine, the Time Machine Locomotive, at the end of Back to the Future Part III.[4]

Although the films do not describe exactly how the flux capacitor works, Doc mentions at one point that the stainless steel body of the DeLorean has a direct and influential effect on the "flux dispersal", but he is interrupted before he can finish the explanation.[2] The flux capacitor requires 1.21 gigawatts of electrical power to operate, which is roughly equivalent to the power produced by 15 typical commercial airplane jet engines.

The instruction manual for the AMT/ERTL DeLorean model kit says: "Because the car's stainless steel body improves the flux dispersal generated by the flux capacitor, and this in turn allows the vehicle smooth passage through the space-time continuum".[9]

Time circuits

 
Time Circuits from DeLorean used in the first and second films.

The time circuits are an integral part of the DeLorean time machine. They were built with an input device and a display. The display was divided into three sections: destination time (shown in red), present time (shown in green), and last time departed (shown in yellow), all annotated with Dymo labels. Each display includes a month, a day, a year, and the hour and minutes in that point in time. The years on the time circuits were limited to four digits and there were no possible negative years that could be reached, i.e. years before "0 A.D." (1 B.C.). This means the DeLorean could travel to any time from 12:00 am on January 1, 1 B.C. to 11:59 p.m. on December 31, A.D. 9999. It is unknown what would happen if one were to travel to the latter date since, after only one minute, it would be the year A.D. 10000 and the time circuits would no longer be able to show the present time.

The destination time display shows the date that the operator wants the DeLorean to go to (when the operator types in a date using the keypad in the DeLorean, it will be shown in the destination time display), the present time display shows the DeLorean's current location in time, and the last time departed display shows what point in time the DeLorean originally was after making a journey through time. Doc demonstrated its capabilities to Marty after its first test, giving two well-known but erroneous dates as examples: the signing of the Declaration of Independence, July 4, 1776; and the birth of Christ, December 25, 0000. He also used the day that he invented time travel, November 5, 1955.

During the second film, because of Biff Tannen's fiddling after he steals the DeLorean, the time circuits began malfunctioning, displaying January 1, 1885, in the destination time display. A bolt of lightning triggered the malfunction to send the DeLorean from 1955 to 1885. Though the vehicle was in mid-air, the spin created by the lightning bolt allowed it to reach 88 mph. Doc was trapped in 1885 and repairs were impossible because the time circuit control microchip, which powered the time circuits, was destroyed by the lightning bolt, and suitable replacement parts would not be invented until at least 1947. Doc placed repair instructions and a schematic diagram in the time machine to enable his 1955 counterpart to repair it using components from that era — which included vacuum tubes — before boarding it up within a silver mine. He then wrote Marty a letter explaining the situation and handed it over to Western Union, with instructions to deliver it to Marty in 1955.

Mr. Fusion

 
A replica of the DeLorean time machine's Mr. Fusion Home Energy Reactor.

The Mr. Fusion Home Energy Reactor is the name of a power source used by the DeLorean time machine in the Back to the Future trilogy. It can be seen for the first time at the end of Back to the Future when Doc pulls into the McFly's driveway after a trip to the year 2015. It is a parody of Mr. Coffee machines, which were very popular at the time of filming.[10] The appliance from which the prop was made was actually a Krups "Coffina" model coffee grinder.

The Mr. Fusion Home Energy Reactor converts household waste to power for the time machine's flux capacitor and time circuits using nuclear fusion, presumably cold fusion. In the film, Mr. Fusion allows the DeLorean time machine to generate the required 1.21 gigawatts needed to travel to any point in time. The energy produced by Mr. Fusion replaces plutonium as the primary power source of the DeLorean's time travel, allowing the characters to bypass the arduous power-generation requirements upon which the plot of the first film hinges. The plutonium fission reactor was most likely left installed underneath Mr. Fusion as a backup power source.[2][3]

The Mr. Fusion can provide enough power to the flux capacitor and the time circuits, but is not used to power up the DeLorean itself, which makes use of an ordinary gasoline combustion engine to reach the 88 mph speed necessary for it to time travel. This limitation proved crucial in the third movie when Doc and Marty find themselves stuck in 1885 and unable to drive the DeLorean due to a punctured fuel line. The vehicle's hover system is powered by Mr. Fusion and is capable of bringing the DeLorean up to the required 88 mph; the combustion engine was also probably left on board as a backup. However, the flight systems were destroyed as a result of a lightning strike, leaving Marty to rely on the original combustion engine, which in turn was disabled.

Fictional timeline

For most of the first film, the 1.21 gigawatts are supplied by a plutonium-powered nuclear fission reactor and, with the absence of plutonium, a bolt of lightning channeled directly into the flux capacitor by a long pole and hook in the film's climactic sequence.[2] At the end of the first film, and for the remainder of the trilogy, the plutonium nuclear reactor is replaced by a "Mr. Fusion Home Energy Reactor" generator possibly acquired in 2015.[3] The "Mr. Fusion" device apparently converts household waste into electrical power; the name suggests nuclear fusion. Due to a "hover conversion" made in 2015, the car also becomes capable of hovering and flight, though it lost this ability at the end of the second film.[3][4]

History

After purchasing the DeLorean (it is unknown who or where Doc bought it from) and modifying it into a time machine, Doc brought it to the Twin Pines Mall and tests it out by using a remote control to send it one minute into the future with his dog Einstein in it, leaving its license plate behind. He also shows Marty the major functions of the DeLorean: the flux capacitor, the time circuits, and the plutonium chamber that powers them. After refueling the time machine with plutonium stolen from Libyan terrorists (who previously stole the plutonium from a power plant), Doc prepares to travel into the future, but the Libyans unexpectedly arrive and shoot Doc. Marty uses the DeLorean to flee from the Libyans and is transported to 1955 after accidentally activating the time circuits, but without the plutonium that is needed to power it. Once there, Marty flees from Old Man Peabody (who thinks he's an alien), crushing one of his baby pine trees in the process, and stops in an undeveloped area. Due to problems with the starter and with the plutonium chamber empty, Marty is forced to hide the DeLorean behind a sign and cover it with branches to keep anyone from seeing it. Marty later shows it to 1955 Doc, who then has it brought back to his workshop. At one point, they had to cover the DeLorean with a tarp to keep Lorraine Baines, Marty's future mother, from seeing it.

Unable to obtain plutonium, Marty and 1955 Doc (after reading a 1985 flyer that Marty had with him following his trip to 1955) decide to harness the power of a lightning strike that will happen one week later to power the flux capacitor in order to send Marty back to 1985. Doc installs a cable leading from the top of the Hill Valley Courthouse (which is where the lightning will strike) down to the street as a means to harness the lightning strike and attaches a long pole and hook to the DeLorean to channel the lightning strike into the flux capacitor once the hook makes contact with the cable while the DeLorean is accelerating at 88 mph. He also places an alarm clock on the DeLorean's dashboard, which is set to ring to signal Marty to drive towards the cable at 88 mph. Doc brought the DeLorean (still covered under the tarp) to the Courthouse to make preparations. While doing this, a cop nearly discovers the time machine before Doc stops him, pretending that it is specialized weather sensing equipment. When the plan is put in motion, complications arise due to the DeLorean undergoing another starter problem and the cable being disconnected by a fallen branch. Despite these major setbacks, the plan succeeds, sending Marty back to 1985 ten minutes before his original departure; Marty had reset the DeLorean to return to 1985 earlier so he would have a chance to warn Doc of his upcoming death since 1955 Doc wouldn't listen to Marty's warnings. This event resulted in two DeLoreans existing in 1985 at the same time: one used by the new timeline’s Marty to escape from the Libyan terrorists and then disappearing to 1955 and the other appearing with the original Marty following his trip from 1955 to 1985.

After returning to 1985, the DeLorean once again suffers another starter problem, forcing Marty to run to the Twin Pines Mall (now called Lone Pine Mall due to Marty's actions in 1955). He arrives too late as Doc is gunned down and watches his counterpart escape to 1955 in the other DeLorean while the Libyans crash into a photo booth, but it is revealed that Doc's death was averted since he had listened to Marty's warning after all. After recovering the DeLorean (which apparently had its starter fixed) and taking Marty home, Doc travels to October 21, 2015, with Einstein, where he upgrades the DeLorean with 2015 technology (replacing the plutonium chamber with a Mr. Fusion Reactor, outfitting a barcode license plate on the back, and giving it the ability to fly), but briefly returns to 1985 to pick up Marty (who brings his girlfriend Jennifer Parker along) and get him to help stop his future son from committing a crime. While there, the DeLorean is stolen by Biff Tannen (who discovers that it's a time machine), who then travels back to November 12, 1955, the same day as the climax of the first film, to give his past self a sports almanac to be used for gambling. Once Biff returns to 2015 without Doc knowing, Doc, Marty, Jennifer (who has fallen unconscious after seeing her future self), and Einstein return to 1985, but find themselves in an alternate timeline where Hill Valley is ruled by Biff that Doc describes as 1985A (alternate 1985). Because of Biff's tampering, the time circuits have malfunctioned, displaying random dates. After learning of 2015 Biff's actions, Marty and Doc travel back to 1955 to restore the timeline.[3] Upon arrival, the DeLorean is hidden behind the same sign that Marty hid the DeLorean in the first film. During the mission, Marty had to wait for 2015 Biff to return to 2015 in his DeLorean in order to retrieve the almanac without 2015 Biff knowing and to prevent further changes to the timeline. Doc later uses the DeLorean to pick up Marty (accidentally switching on the malfunctioning time circuits) and chase down Biff, where they recover and destroy the almanac, but Doc is unable to land the DeLorean due to strong turbulence. It is struck by lightning again in the very same electrical storm, this time by accident.

According to writers Bob Gale and Robert Zemeckis, the lightning causes the DeLorean to spin at 88 miles per hour,[11] and Doc later states in a letter to Marty that the bolt caused a "gigawatt overload" which "shorted out the time circuits and destroyed the flying circuits".[4] The lightning strike causes the DeLorean to disappear from 1955, traveling back in time to January 1, 1885 (earlier in the film, Doc mentions that the time circuits are not functioning correctly; several instances in the film that show the destination time circuit displaying January 1, 1885, as the destination when the time circuits malfunctioned).[3]

Once in 1885, the DeLorean is hidden in a mine because suitable replacement parts to replace its destroyed microchip will not be invented until 1947 (presumably referring to the transistor, invented in that year). 1955 Doc and Marty recover the DeLorean from the mine and 1955 Doc builds a vacuum tube circuit assembly to replace the destroyed microchip circuitry and restore the vehicle's time travel capabilities. The tires have disintegrated in storage, so 1955 Doc replaces them with whitewalls. The gasoline engine is still functional, but the flying circuits are not.

Due to the events in the first two films, a total of four DeLoreans existed at the same time in 1955: the first in 1955 Doc's lab (taking place during the events of the first film), the second hidden somewhere by 2015 Biff after stealing the DeLorean in 2015, the third used by Doc and Marty to travel to 1955 and undo the changes caused by 2015 Biff, and the fourth hidden in the mine, only existing after Doc is transported to 1885.

In a letter Doc wrote to Marty in 1885, Doc states he is happy in his new life there and requests that Marty not attempt to retrieve him, but instead to return to 1985 and destroy the DeLorean, believing that it has brought them and the world nothing but disaster. However, Marty and 1955 Doc learn of the tragedy that will come to Doc's way when he is murdered by Biff's grandfather, Buford "Mad Dog" Tannen, on September 7, 1885; therefore, 1955 Doc agrees to send Marty back to 1885 to rescue his future self. This resulted in two DeLoreans existing in 1885: the one hidden in the mine after Doc is sent to 1885 by the lightning strike, and the one that Marty uses to travel to 1885 to rescue Doc.

When Marty arrives in 1885, the DeLorean's fuel line is damaged while driving off-road during a Native American attack and is forced to hide it in a cave. He and Doc later recover it and patch up the line. When Clara Clayton came to see Doc, the DeLorean is once again hidden under a tarp so Clara cannot see it. They attempt to use whiskey as a replacement fuel, since commercial gasoline is not yet available; the test fails, destroying the fuel injection and ignition systems and leaving the car unable to travel under its own power. They try using horses as an alternate means to get the car up to 88 mph, but this fails since the horses' top speed is approximately 30 mph. They then decide to use a steam locomotive to push the DeLorean up to 88 mph. After speaking to the train engineer, they learn that in order for the locomotive to reach 88 mph, it would have to be on a straight track with a flat surface, with no cars coupled behind it, and with the boiler heated up to dangerous levels. After stealing the locomotive, Doc had his version of "Presto Logs" (pressed wood treated with anthracite) added to the boiler to provide the extra power needed to push the car up to 88 mph. Doc also replaces the 1955-style wheels with cast iron train wheels that fit on the track rails before loading the DeLorean onto the tracks and uses the old tires and a wooden support to cushion the locomotive's "cow catcher" and the car's rear end. Since each of the three "Presto Logs" fire at different intervals with increasing power, Doc installs a boiler temperature gauge on the DeLorean's dashboard to indicate when the car will experience a sudden burst of acceleration. Marty and Doc make the run on a flat, straight section of track leading to an unfinished bridge over Shonash Ravine (which would have been renamed Clayton Ravine if Marty and Doc have not saved Clara from falling in earlier); once the car reaches 88 mph, the Mr. Fusion unit provides the power required to activate the flux capacitor and make the jump through time.[4] Upon reaching the end of the track, the DeLorean disappears to 1985 with Marty (with Doc staying behind with Clara) while the locomotive falls down the cliff and is destroyed in the explosion.

When the DeLorean makes its final trip to 1985, it lands on the now-completed bridge and crosses over Shonash Ravine (now called Eastwood Ravine due to the townsfolk believing that Clint Eastwood, the name that Marty used in 1885, fell in and was killed) before coasting to a stop. Marty bails out seconds before it is struck and destroyed by an oncoming freight train. Later, Doc, Clara, and their children: Jules and Verne, appear in the same location where the DeLorean was destroyed, piloting a new time machine in the form of a steam-powered train. After picking up Einstein, the couple and their children depart for an unknown time period.

Other elements

 
The time circuits in a replica time machine.

In the films, the DeLorean time machine is a licensed, registered vehicle in the state of California, where the films take place. The vanity license plate used in the film reads "OUTATIME", a deliberate anomaly, as the maximum number of symbols on California plates is seven characters.[2] When Doc returns from 2015, it is a barcode license plate,[2][3] which implies that by that year license plates have moved to other more sophisticated means of tracking and registering.

Animated Series

In The Animated Series, Doc builds another DeLorean into a time machine, restoring most of its features, including Mr. Fusion and the hover conversion (Doc either rebuilds the one destroyed at the end of Part III or he simply builds a new one). He also seemingly adds the capability to travel through space in addition to time (i.e., appear at a different location from the one it departed), similar to the TARDIS from Doctor Who. The cartoon DeLorean time machine has many add-ons, including a back seat in normal two-door mode, the ability to transform into a four-door, a pop-out covered wagon top, a blimp, a rear video screen, and a voice activated time input.

Back to the Future: The Game

Back to the Future: The Game features a chronal duplicate of the original DeLorean, which Doc Brown recovered from the timestream after the destruction of the original. This DeLorean is created at the end of Back to the Future Part II; when the original time machine was struck by lightning: while the DeLorean itself is sent to 1885, a fully functional duplicate appears (apparently unmanned and undamaged) in 2025, where Doc retrieves it with the Time Train before Griff Tannen could. This Clone DeLorean is effectively the same as the Part II one, including the occasional glitches in the time circuits (mostly affecting the last time departed time display), but with a new automatic retrieval feature that automatically brings the Clone DeLorean to a set time and location of Doc's choosing every time Doc doesn't return to the car in a fixed amount of time. The original DeLorean made a brief appearance in Marty Mcfly's nightmare where Doc sends it one minute into the future, which copies the events of the first film. The only difference is that it does not return from its one-minute trip.[12]

The Clone DeLorean appears outside of Doc's house after Marty recovers Doc's notebook from Biff Tannen. Inside is Einstein, a tape recorder with a message from Doc that tells Marty about the automatic retrieval system, and a mysterious shoe. After learning that Doc is stuck somewhere in time, he activates the time circuits, but the last time departed time display is faulty, forcing Marty to use Einstein and the shoe to find out Doc's whereabouts. He eventually learns that Doc is in 1931 and will be killed by Irving "Kid" Tannen, Biff's father. Marty travels to 1931, one day before Doc's death, appearing in the middle of a police chase (the glitch in the time circuits is resolved after the police car bumps into the Clone DeLorean). After getting away from the police, he hides the Clone DeLorean behind a sign.

After rescuing Doc, they prepare to return to 1986, but Marty discovers that he is disappearing; it turns out his grandfather Artie Mcfly will be killed by Kid as a result of Marty's earlier actions. Upon being caught by Officer Danny Parker, Marty swipes the DeLorean keys and travels several hours back (with Doc staying behind) to rescue Artie from Kid to ensure his existence before he and Doc return to 1986, but find themselves in a dystopian future which was brought into existence due to Kid not being arrested. Marty and Doc return to 1931 to correct the timeline (Doc hides the DeLorean in the DeSoto Lot to ensure that no one can find it and later uses it to get Einstein down from the Courthouse), but their actions resulted in the creation of a second dystopian future, with Doc disappearing from existence.

After returning to 1986, Marty crashes the Clone DeLorean into a billboard and after he gets out (breaking the window in the process), the Clone DeLorean falls through the billboard and crashes onto the ground, becoming badly damaged. Marty uses one of its wheels and a battery to get over a nearby wall. The Clone DeLorean is later restored by an alternate version of Doc Brown (who took six months to repair it) who has never developed time travel technology, having access to limited notes about the flux capacitor. After traveling six months back in time, he picks up Marty and they return to 1931. As such, the time circuits of the alternate Clone DeLorean become even more glitchy (resulting in them arriving two months late), accumulating errors as severe as the interval of time traveled, with increasing damage with every time travel attempt: as such, Citizen Brown, the alternate version of Doc, has to install a diagnostic console made of materials available in 1931 (appearing as a plywood box with a diagnostic lightbulb and three similar bulbs placed on the coils on the outer body).[13]

Apparently, part of the problem is chromium parts becoming unstable during time travel, according to Citizen Brown. After a falling out between the duo, Citizen Brown leaves in the alternate Clone DeLorean and picks up Edna Strickland, one of the game's main villains, having decided to have her help change his younger self's career after learning of Edna's unhappy future. Marty foils their attempts, leading Edna to steal the alternate Clone DeLorean with Officer Parker in pursuit. The original Doc arrives in the original Clone DeLorean as Citizen Brown disappears from existence due to earlier events in the game; i.e., because Marty restored the original timeline (the events of all three films), the original Doc and Clone DeLorean are brought back into existence. Officer Parker nearly arrests Marty and Doc for allegedly having the car that Edna got away in. After they explain to him that there is more than one DeLorean, Marty explains to Doc that the alternate Clone DeLorean had malfunctioning time circuits. To make matters worse, the entire town of Hill Valley disappears around them; Edna had unwillingly time traveled to 1876. They go to "Mary Pickford's" house and see that the alternate Clone DeLorean had been destroyed. After they get information from Mary, who was really Edna, they go to 1876. After they stop the fire that would've burned down Hill Valley, they chase down Edna, who is trying to get away in the alternate Clone DeLorean. Marty hoverboards to Edna's DeLorean and synchronizes the two DeLoreans by attaching signal dishes called flux synchronizers over the diagnostic lightbulbs on Edna's DeLorean and pointing them at the receiving dish on Doc's DeLorean (which was apparently attached to its front hood recently), which is flying behind the one that Edna is driving. While doing this, Edna unsuccessfully tries to shake Marty off as he moves around her DeLorean. Their actions result in Edna's DeLorean suffering minor damages: the rear mirror being damaged, one of its windshield wipers being torn off, and the Mr. Fusion Reactor being knocked open (although Marty manages to close it). Once Marty finishes this task, he returns to Doc's DeLorean as they begin their return to 1931, activating the flux capacitor on Edna's DeLorean and making it speed up to 88 mph with its time circuits set to 1931. After they all return to 1931, Edna crashes in front of the police station and is then arrested by Officer Parker for her crimes. Edna's DeLorean then vanishes because of the time ripples catching up with them, causing "chronal decay" (i.e., since Citizen Brown's timeline ceased to exist, the alternate Clone DeLorean was erased from existence). Marty and Doc return to 1986, where three DeLoreans (one normal, one blue, and one black) suddenly arrive with different versions of Marty. The duo leave the Martys arguing before departing to an unknown time in their own DeLorean.[14]

It is implied that the Time Train stays with Clara, Jules, and Verne, passingly mentioned as enjoying the same nomadic life around the time-stream of Doc, but it is never seen in the game.[12][14]

Back to the Future: The Ride

In Back to the Future: The Ride, Doc, who now lives in a lab called the Institute of Future Technology, had created an 8-passenger DeLorean that can fly just like the original DeLorean (which can be seen in the ride and in the outside display) and the Time Train (which can only be seen in display outside of the attraction). Unlike the original DeLorean, the flux capacitor is in the front of the cockpit along with a small screen, the time circuits, the keypad, and the speedometer. It is also equipped with a sub-ether time-tracking scanner that allows Doc to pinpoint the location of the original DeLorean in time. The original DeLorean is shown to have its original "OUTATIME" license plate instead of the bar code license plate, but it could just mean that this DeLorean is actually a new one being built into a time machine. Doc can be seen traveling in the original DeLorean in the ride's queue videos. In the attraction, Biff Tannen (who stowed away in one of the institute's time machines that had recently visited 1955) steals the original DeLorean, prompting Doc to send the riders to the 8-passenger DeLorean and use it to go after Biff. The ride begins with the 8-passenger DeLorean traveling to 2015 Hill Valley where it chases Biff across the town. Biff and the riders then travel to the ice age where the 8-passenger DeLorean experiences a temporally engine failure after Biff causes an avalanche that damages it. The 8-passenger DeLorean catches up to Biff in the Cretaceous Period. Biff's DeLorean gets damaged by a T-Rex and lands in a volcano while the T-Rex swallows the 8-passenger DeLorean, but spits it back out. The 8-passenger DeLorean lands in the lava and follows Biff as he goes over a cliff. The riders then bump into him, sending both DeLoreans back to 1991. In a post-credits scene, Clara Clayton, who has built the Time Train with Doc, reveals to have currently repaired the DeLorean and travels back to 1947 to a farm.

Doc Brown Saves the World

In Doc Brown Saves the World, there was a repaired DeLorean time machine which included new replacement parts from 2015. The DeLorean is also seen in a video promoting Doc Brown Saves the World, and it is unknown as to whether or not a flux capacitor was inside.

Time Train

The Time Train was a second time machine that appears at the end of Part III, which is powered by steam instead of gasoline. Doc built it out of a steam locomotive. It homages the submarine Nautilus from Jules Verne's novel Twenty Thousand Leagues Under the Seas. It took Doc ten years to build it. The flux capacitor is inside the chimney headlamp at the front of the locomotive. The time circuits appear as rotating dials that are identical to the DeLorean's time circuits, though are not clearly seen in the film. The sides of the cabin (which display Doc's initials: ELB) are capable of opening the same way as the DeLorean's gullwing doors, but can also deploy stairs that allow people to climb on board. Its tender also has vents which function the same way as the DeLorean's. How Doc was able to create the flux capacitor and time circuits for the Time Train in 1885 is unexplained, but it is assumed that Doc used parts from the hoverboard that Marty left behind in 1885 and the broken DeLorean that was buried in the mine to build them (all while ensuring that Marty and his 1955 counterpart would be able to repair it). Unlike the DeLorean, the external components of the Time Train were symmetrical on both sides of the vehicle, possibly representing a more sophisticated grasp of the time travel technology on Doc's part, despite being constructed from more primitive materials. Interestingly, before the Time Train appeared in 1985, it triggered the bells and gates on the nearby railroad crossing as if another train was coming. This could mean that the Time Train is so powerful that it enables a connection with its destination time even before arriving to that point of time.

Following its completion and its first time travel test, Doc and his family traveled to 2015 and beyond to give it a hover conversion, allowing it to fly just like the DeLorean. When Doc returned to 1985 to pick up Einstein and meet up with Marty and Jennifer, he chose the most likely place that they might be at that given time, the site of the DeLorean's destruction. After introducing his sons, Jules and Verne, and giving Marty a picture of him and Doc in 1885, Doc activates the train's flying capabilities and departs to an unknown time.

Cars used in filming

Universal Studios special effects department built three main DeLorean time machines for the movie Back to the Future. The film's producers characterized the DeLoreans with three names: the A car, B car, and C car.

The "A" car, also known as the Hero car, was the most detailed and utilized vehicle during production.[15] After filming was over, the "A" car was delivered to Universal Studios Hollywood as an attraction piece. As time passed, visitors started taking parts off the vehicle and wandering off with them. Bob Gale selected a team to repair the car so it could be in a perfect condition. The vehicle is currently being displayed at the Petersen Automotive Museum in Los Angeles.[16]

The "B" car, also known as the Stunt Car used in all three movies, was mainly used for stunts. After purposely being struck by a train during production, the car was left as a pile of rubble. Movie car customizer Jay Ohrberg used the "B" car wreckage to construct various DeLorean replicas. The "B" car's body panels were sold to Planet Hollywood Hawaii, where it was hooked up on the ceiling of the restaurant until its shutdown in 2010. The car was sold at auction to Bill and Patrick Shea after Back to the Future HQ reached out to Planet Hollywood to find the car's remains. The stunt car is currently being displayed at Hubbardston, Massachusetts.[17][18]

The "C" car was used for interior footage and was torn apart so the camera could fit inside the car. The vehicle was left at Universal Studios Hollywood, many of its parts were put together on a replica remodeled by Tom Talmon Studios for Universal Japan. Universal Japan sold the car to a private company and the vehicle is currently being displayed on the company's entryway.[18]

There were three extra DeLoreans used through the production of the sequels. The fiberglass car used on special effects was reportedly destroyed. The stunt train, better known as The Oxnard Car, was displayed in Universal Studios, Florida, from the early 1990s to 2020. The studio decided to replace the original car with a replica to be stored for restoration. The desert car with the blue cross over tube was left at Universal Studios Hollywood; Tom Talmon Studios used parts of this car on a replica displayed on Universal Japan. After Japanese workers stole some of the car props, ScreenUsed acquired the car for restoration and then settled the car for auction. Bill and Patrick Shea ended up buying it, and they placed the car on display at Hubbardston, Massachusetts.[17]

Development

 
Inside the cabin facing front
 
Inside the cabin facing rear

The time machine went through several variations during production of the first film, Back to the Future. In the first draft of the screenplay, the time machine was a laser device that was housed in a room; at the end of the draft the device was attached to a refrigerator and taken to a nuclear bomb test. Spielberg vetoed the idea, concerned that children might attempt to climb into one.[19] Zemeckis suggested the DeLorean because it offered mobility, a unique design, and would appear like an alien UFO to a 1950s family[20][21][22][23][24] due to its characteristic gullwing doors (which were inspired by the Mercedes-Benz 300 SL). The original ending of the 1985 film Back to the Future was to have Marty outrun a nuclear explosion at a test site to power the DeLorean's flux capacitor in order to travel back to 1985. However, during the movie's filming, it went overbudget and behind schedule, and Universal refused to grant the producers anymore money, as it couldn't afford the desert location to shoot such scenario. Ultimately, the power source was changed to the lightning strike at the clock tower in Hill Valley as a result.[25]

The DeLorean was developed under the supervision of Lawrence Paull,[26] who designed it with artist Ron Cobb and illustrator Andrew Probert.[27][28] They intended for the vehicle to look fixed together from common parts.[26] The Ford Motor Company offered $75,000 to use a Ford Mustang instead; Gale responded that "Doc Brown doesn't drive a fucking Mustang".[21] Michael Fink was hired as the art department liaison and tasked with realizing Cobb's sketches and overseeing the car's construction. Paull and Canton, who had worked with him on Blade Runner (1982) and Buckaroo Banzai (1984), respectively, recruited him. Fink had a project lined up but agreed to help in the free weeks he had remaining.[26]

Three DeLoreans used were purchased from a collector—one for stunts, one for special effects, and one for normal shots.[27][29] They were unreliable and often broke down.[21] 88 mph (142 km/h) was chosen as the time travel speed because it was easy to remember and looked "cool" on the speedometer.[30] A custom speedometer was built to simulate 88 mph, as a 1979 law passed by then-President Jimmy Carter had limited speedometers to 85 mph to reduce speeding.[28] The Flux Capacitor, necessary for time travel, was called the Temporal Field Capacitor; Zemeckis said the name was not believable. From his work on the 1979 drama The China Syndrome, Fink had learned of Neutron flux. He and Zemeckis simultaneously suggested renaming it the Flux Capacitor. Cobb and Probert had already placed the Flux Capacitor on the external and interior roof of the DeLorean. Fink placed it next to the driver.[26] Fink constructed the device using a NEMA box and backlit Torr High-Voltage relays. The time display was constructed from LMB boxes. When Fink left, he picked Michael Scheffe to replace him. Scheffe finished the Flux Capacitor build and built the "Mr. Fusion" replacement power supply out of a Krups coffee grinder.[26]

The flying DeLorean used a combination of live-action footage, animation, and a 1:5 scale (approximately 33 inches (840 mm) long) model built by Steve Gawley and the model shop crew and filmed against a blue screen.[31][32] Months were spent building the model from epoxy, steel, and aluminum. Halogen lamps were fitted to the tires to simulate thrusters; the tires were made from aluminum to withstand the heat.[32][33] Blue chalk was rubbed on the windscreen to conceal the lack of riders—[32] the last effect produced by ILM.[34]

The act of the DeLorean traveling through time is referred to as the "time slice" effect. Zemeckis only knew that he wanted it to be a violent transition. He described it like a "Neanderthal sitting on the hood of the DeLorean and chipping away the fabric of time in front of him".[35] He suggested a crack in time opening before the car, but animators could not determine what would be on the reverse of the opening visible to the audience. An electrical effect enveloping the car was abandoned because a similar process had been used in the science fiction film The Terminator (1984).[36] Other ideas included a wave of energy that moved over the car before exploding and blowing open a hole in time, and a "cubist" effect where the car would break into separate segments, each individually expanding in proportion before disappearing. Takahashi developed artwork showing the segments popping out from the DeLorean and glowing. Gale liked the effect, but Zemeckis did not; Spielberg found it unrealistic.[36][35]

Takahashi animated separate effects like contrails and flashing lights; Zemeckis opted to use them all.[35] The effects were drawn in black and white and optically manipulated afterward. This resulted in the DeLorean appearing to emit various effects that strike in front of the car to create an explosion that opens the time slice. This was combined with practical effects including smoke, sparks, and flash-bulbs.[36] Fire emitting from the tires was intended to start the sequence but the gas jet mechanism repeatedly failed; it only functioned for two of the six shots required.[37] Peggy Regan animated flames and reflections for consistency.[38] The trails of fire left behind the DeLorean were practical, but the actual movement was slow. The footage was sped up and smoke added where the car disappeared. Fox and Lloyd were filmed against a reflective mylar blue screen set to match the car park's wet surface and composited into the trails of fire.[36][32] Reflections of the actors were matte paintings filmed through a ripple glass to add texture.[36] A stuntman in a dog suit portrays Doc's dog when in the moving car.[39] It was suggested that the DeLorean emerge from the time slice in sections that slam into each preceding section. Norwood and Charlie Mullen outlined an animation and Ellen Lichtwardt animated a glow to the vehicle. The effect is so quick as to be imperceptible. Zemeckis preferred this as he did not want the audience to think too much about how everything worked.[38]

Different parts from three 1982 DeLoreans were used in the first film. Liquid nitrogen was poured onto the car for scenes after it had traveled through time to give the impression that it was cold. The base for the nuclear reactor was made from the hubcap from a Dodge Polara. Aircraft parts and blinking lights were added for effect. In one of the first scenes, carbon dioxide extinguishers were hidden inside the DeLorean to simulate the exhaust effect.[40] Ultimately, five real DeLoreans were used in the filming of the trilogy, plus one "process" car built for interior shots. In the off-road scenes in the third film, a modified-for-off-road VW Beetle frame was fitted to the DeLorean with the whitewall tires and baby Moon hubcaps.[41] A seventh DeLorean was also used in the filming, but this one was merely a full-sized, fiberglass model used for exterior shots where the vehicle hovers above the set as well as when the actors interact with the vehicle.[42]

While the original PRV V6 engines were retained in the physical cars for filming, the film's sound effects artists used the sound of a Porsche 928 V8 and the Star Wars's landspeeder for the engine sounds in the movie.[43]

Replicas

 
Two DeLorean time machine replicas.

As of November 2021, approximately 122 DeLoreans are known to be converted to Back to the Future Time Machines.[44]

References

  1. ^ a b Back to the Future: 13 things you may not know, The Telegraph, October 30, 2016,
  2. ^ a b c d e f g h i j k l Back to the Future (DVD). 1985.
  3. ^ a b c d e f g h Back to the Future Part II. 1989.
  4. ^ a b c d e f Back to the Future Part III. 1990.
  5. ^ "Back to The Future Script" (PDF). Retrieved February 5, 2021.
  6. ^ "definition and pronunciation of gigawatt". Merriam-Webster Feb 2008. April 25, 2007. Retrieved March 8, 2010.
  7. ^ . Lamar.colostate.edu. April 5, 2006. Archived from the original on June 13, 2010. Retrieved March 8, 2010.
  8. ^ Chang, Richard S. "You Say Gigawatt, I Say Jigowatt", The New York Times blog, April 8, 2008.
  9. ^ "AMT/ERTL Back to the Future DeLorean Time Machine Model Kit Instruction Manual" (PDF). Scalemates. 1991. (PDF) from the original on July 30, 2022. Retrieved July 30, 2022.
  10. ^ Andersen, Kent. Saving Planet Earth: A Practical Hands-On Approach, 2008, p. 101.
  11. ^ From the Official Back to the Future FAQ by Bob Gale and Robert Zemeckis, question 1.16.
  12. ^ a b Back to the Future: The Game, Chapter 1 – It's About Time
  13. ^ Back to the Future: The Game, Chapter 4 – Double Visions
  14. ^ a b Back to the Future: The Game, Chapter 5 – Outatime
  15. ^ Concotelli, Steve, director. OUTATIME: Saving the DeLorean Time Machine. Virgil Films, July 19, 2016, www.outatimemovie.com/.
  16. ^ . Archived from the original on March 20, 2016.
  17. ^ a b Silknitter, Tom. BTTF3 DeLorean, Sept. 2010, bttf3delorean.com/Where_are_they.html.
  18. ^ a b Jay Gearan, Correspondent. "'Back to the Future' Still No. 1 with Hubbardston Father, Son". Telegram.com, Telegram.com, January 8, 2017, www.telegram.com/news/20170107/back-to-future-still-no-1-with-hubbardston-father-son.
  19. ^ Sciretta, Peter (July 15, 2009). "How Back To The Future Almost Nuked The Fridge". Slashfilm. from the original on August 4, 2012. Retrieved September 10, 2020.
  20. ^ Holleran, Scott (November 18, 2003). . Box Office Mojo. Archived from the original on December 6, 2008. Retrieved September 8, 2020.
  21. ^ a b c Koknow, David (June 9, 2015). "How Back to the Future Almost Didn't Get Made". Esquire. from the original on July 26, 2016. Retrieved July 14, 2016.
  22. ^ Bahiana, Ana Maria (October 21, 2015). "An Oral History of Back to the Future, by Robert Zemeckis". goldenglobes.com. from the original on June 24, 2019. Retrieved September 1, 2020.
  23. ^ Zemeckis, Robert; Gale, Bob (1985). The making of Back to the Future (VHS). Universal Pictures.
  24. ^ Zemeckis, Robert; Gale, Bob (2002). Back to the Future: The Complete Trilogy DVD commentary for part 1 (DVD). Universal Pictures.
  25. ^ Tales From the Future (2010 DVD/Blu-ray set documentary)
  26. ^ a b c d e "Interview: Special Effects Consultant Michael Fink". BacktotheFuture.com. from the original on August 7, 2020. Retrieved September 20, 2020.
  27. ^ a b Pourro 1985, p. 56.
  28. ^ a b Anders, Charlie Jane (June 17, 2015). "11 Incredible Secrets About The Making Of Back To The Future". io9. from the original on February 29, 2020. Retrieved September 15, 2020.
  29. ^ Gaines 2015, p. 63.
  30. ^ "Back to the Future: 13 things you may not know". Telegraph.co.uk. October 21, 2015. from the original on February 6, 2020. Retrieved September 15, 2020.
  31. ^ Pourro 1985, pp. 66, 67.
  32. ^ a b c d Turner, George E. (March 20, 2020). "Back to the Future: Wheels on Fire". American Cinematographer. from the original on March 28, 2020. Retrieved September 18, 2020.
  33. ^ Pourro 1985, p. 66.
  34. ^ Pourro 1985, p. 67.
  35. ^ a b c Failes, Ian (October 21, 2015). "The future is today: how ILM made time travel possible". Fxguide. from the original on July 1, 2016. Retrieved June 12, 2016.
  36. ^ a b c d e Pourro 1985, p. 60.
  37. ^ Pourro 1985, pp. 60, 62.
  38. ^ a b Pourro 1985, p. 62.
  39. ^ Bui, Hoai-Tran (October 21, 2015). "15 things you probably didn't know about 'Back to the Future'". USA Today. Archived from the original on September 16, 2020. Retrieved September 16, 2020.
  40. ^ [Back to the Future Trilogy DVD, Production Notes]
  41. ^ Klastorin, Michael; Hibbin, Sally (1990). Back to The Future: The Official Book of The Complete Movie Trilogy. Hamlyn. p. 40. ISBN 0-600-57104-1. 6 DeLoreans, including one 'process' car which can be dismantled for easy access, and a lightweight fiberglass model, were used in the filming.
  42. ^ Klastorin, Michael; Hibbin, Sally (1990). Back to The Future: The Official Book of The Complete Movie Trilogy. Hamlyn. p. 43. ISBN 0-600-57104-1. A lightweight, full-size fibreglass DeLorean was built, complete with radio-controlled wheels. This DeLorean was flown by wires with the aid of a crane.
  43. ^ , archived from the original on February 3, 2019, retrieved September 28, 2020
  44. ^ "Texas DeLorean Owners".

Sources

  • Boyd, Matt. "The Back to the Future DeLorean" in DieCastX Magazine, Spring 2007, p. 98.
  • De Santis, Solange. "Steven Spielberg Builds a Time Machine" in Popular Mechanics, August 1985, pp. 84–87, 132.
  • Iaccino, James F. Jungian Reflections within the Cinema: A Psychological Analysis of Sci-Fi and Fantasy Archetypes, pp. 81–89. Greenwood Publishing Group, 1998. ISBN 0-275-95048-4
  • Kaku, Michio. Physics of the Impossible: A Scientific Exploration Into the World of Phasers, Force Fields, Teleportation, and Time Travel. Random House, Inc., 2008. ISBN 0-385-52544-3
  • McDermid, Val. A Suitable Job for a Woman: Inside the World of Women Private Eyes. Poisoned Pen Press, 1999. ISBN 1-890208-15-9
  • Mowbray, Scott. "Let's Do the Time Warp Again" in Popular Science, March 2002, pp. 46–51.
  • Nahin, Paul J. Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction. Springer, 1999. ISBN 0-387-98571-9
  • Ní Fhlainn, Sorcha. The Worlds of Back to the Future: Critical Essays on the Films. McFarland, 2010. ISBN 0-7864-4400-2
  • Redmond, Sean. Liquid Metal: the Science Fiction Film Reader, pp. 115–122. Wallflower Press, 2004. ISBN 1-903364-87-6.
  • Simpson, Philip; Utterson, Andrew; Shepherdson, Karen J. Film Theory: Critical Concepts in Media and Cultural Studies, Volume 2. Taylor & Francis, 2004. ISBN 0-415-25973-8
  • Sobchack, Vivian Carol. Screening Space: the American Science Fiction Film. Rutgers University Press, 1997. ISBN 0-8135-2492-X
  • Gaines, Caseen (2015). We Don't Need Roads: The Making of the Back to the Future Trilogy. New York City, New York: Plume, an imprint of Penguin Random House. ISBN 978-0-14-218153-9.
  • Pourro, Janine (November 1985). "Backyard Adventures - Spielberg Style". Cinefex. No. 24. United States. ISSN 0198-1056.

External links

  •   Media related to DeLorean DMC-12 in Back to the Future at Wikimedia Commons

February 18, 2023
delorean, time, machine, back, future, franchise, time, travel, device, made, retrofitting, delorean, vehicle, with, flux, capacitor, which, allows, time, travel, when, hits, miles, hour, delorean, time, machineback, future, franchise, elementside, view, delor. In the Back to the Future franchise the DeLorean time machine is a time travel device made by retrofitting a DMC DeLorean vehicle with a flux capacitor which allows for time travel when it hits 88 miles per hour DeLorean Time MachineBack to the Future franchise elementSide view of the DeLorean Time MachinePublisherAmblin EntertainmentFirst appearanceBack to the Future1985Created byRobert ZemeckisBob GaleGenreScience fictionIn universe informationTypeTime machineFunctionAllows the occupants to travel through time along with the carAffiliationMarty McFlyEmmett Brown Contents 1 Operation 1 1 Jigowatts 2 Equipment 2 1 Flux capacitor 2 2 Time circuits 2 3 Mr Fusion 3 Fictional timeline 3 1 History 4 Other elements 4 1 Animated Series 4 2 Back to the Future The Game 4 3 Back to the Future The Ride 4 4 Doc Brown Saves the World 5 Time Train 6 Cars used in filming 7 Development 8 Replicas 9 References 10 Sources 11 External linksOperation EditThe control of the time machine is the same in all three films The operator is seated inside the DeLorean except the first time when the remote control is used and turns on the time circuits by turning a handle near the gear lever activating a unit containing multiple fourteen and seven segment displays that show the destination red present green and last departed yellow dates and times After entering a target date with the keypad inside the DeLorean the operator accelerates the car to 88mph 142km h which activates the flux capacitor As it accelerates several coils around the body glow blue white while a burst of light appears in front of it Surrounded by an electrical current similar to a Tesla coil the whole car vanishes in a flash of white blue light seconds later leaving a pair of fiery tire tracks A digital speedometer is attached to the dashboard so that the operator can accurately gauge the car s speed Various proposals have been brought forth in the past by fans of the movie franchise for why the car has to be moving at 88 mph to achieve temporal displacement 1 but actually the production crew chose the velocity simply because they liked how it looked on the speedometer modified for the movie 1 The actual speedometer on the production DeLorean s dashboard only goes up to 85 mph and the car itself was criticized for being underpowered Observers outside the vehicle see an implosion of plasma as the vehicle disappears leaving behind a trail of fire aligned with the DeLorean s tires which can also appear in midair while occupants within the vehicle see a quick flash of light and instantaneously arrive at the target time in the same spatial location relative to the Earth as when it departed In the destination time immediately before the car s arrival three large and loud flashes occur at the point from which the car emerges from its time travel After the trip the exterior of the DeLorean is extremely cold and frost forms from atmospheric moisture all over the car s body Vents on the back heat the vehicle after time travel The DeLorean suffers assorted malfunctions and damage over the course of the trilogy In the first film the car has starter problems and has a hard time restarting once stopped much to Marty s repeated frustration 2 In the second film the destination time display malfunctions and begins to show a series of random dates causing Doc to be sent back to 1885 when the DeLorean is struck by lightning with him inside 3 In the third film a note left by Doc s 1885 self reveals that the DeLorean s flying circuits added by him in 2015 were destroyed by the strike After Marty travels back to 1885 the fuel line and fuel injection manifold both suffer damage leaving the car unable to move under its own power 4 A back view of the DeLorean time machine The time machine is electric and requires a power input of 1 21 gigawatts 1 620 000 hp to operate originally provided by a plutonium fueled nuclear reactor 2 In the first film following Marty s accidental trip from 1985 to 1955 Doc has no access to plutonium in 1955 so he outfits the car with a large pole and hook in order to channel the power of a lightning bolt into the flux capacitor and send Marty back to 1985 2 During Doc s first visit to 2015 he has the machine refitted to fly in addition to standard road driving and he replaces the nuclear reactor with a Mr Fusion generator that uses garbage as fuel 2 3 Although the Mr Fusion unit provides the required power for the time machine the DeLorean is still powered by an internal combustion engine for propulsion The fuel line is damaged during Marty s trip to 1885 in Back to the Future Part III after he and Doc patch it they attempt to use whiskey as a replacement fuel since commercial gasoline is not yet available The test fails damaging the car s fuel injection manifold and leaving it unable to travel under its own power Doc and Marty consider options to reach the required 88 mph such as pulling it with horses which fails because the car barely breaks 30 mph and ultimately settle on pushing the car with a steam locomotive They replace the DeLorean s standard wheels with a set designed to mate with train rails For the extra power needed to push it up to speed Doc adds his own version of Presto Logs a chemically treated mixture of pressed wood and anthracite to the locomotive s boiler and chooses a location with a straight section of track long enough to achieve 88 mph 4 Jigowatts Edit The power required is pronounced in the film as one point twenty one jigowatts 2 with a jigowatt referring to one billion watts The spelling of jigowatts is used in the script 5 and was also the spelling used in the closed captioning in earlier home video versions of the film However the correct spelling is gigawatts Although rarely used the j sound at the beginning of the SI prefix giga is an acceptable pronunciation 6 7 Later versions of closed captioning such as in the 2020 DVD Trilogy release have corrected the spelling to gigawatts In the DVD commentary for Back to the Future Bob Gale states that he had thought it was pronounced this way because it was how a scientific adviser for the film pronounced it 8 The jigowatts spelling is used by Alan Dean Foster in the novelizations of the second and third films Equipment EditFlux capacitor Edit The Flux Capacitor as seen in a replica DeLorean Time Machine The flux capacitor which consists of a rectangular shaped compartment with three flashing Geissler style tubes arranged in a Y configuration is described by Doc as what makes time travel possible The device is the core component of the time machine 2 As the time machine nears 88 mph light coming from the flux capacitor begins pulsing more rapidly until it becomes a steady stream Doctor Emmet Brown originally conceived the idea for the flux capacitor on November 5 1955 when he slipped on the edge of his toilet while hanging a clock in his bathroom and hit his head on the sink In 1955 Doc had named the flux capacitor the Flux Compresser as shown on 1955 Doc s diagram 2 A similar but possibly steam powered flux capacitor is also seen in the chimney headlamp of Doc s second time machine the Time Machine Locomotive at the end of Back to the Future Part III 4 Although the films do not describe exactly how the flux capacitor works Doc mentions at one point that the stainless steel body of the DeLorean has a direct and influential effect on the flux dispersal but he is interrupted before he can finish the explanation 2 The flux capacitor requires 1 21 gigawatts of electrical power to operate which is roughly equivalent to the power produced by 15 typical commercial airplane jet engines The instruction manual for the AMT ERTL DeLorean model kit says Because the car s stainless steel body improves the flux dispersal generated by the flux capacitor and this in turn allows the vehicle smooth passage through the space time continuum 9 Time circuits Edit Time Circuits from DeLorean used in the first and second films The time circuits are an integral part of the DeLorean time machine They were built with an input device and a display The display was divided into three sections destination time shown in red present time shown in green and last time departed shown in yellow all annotated with Dymo labels Each display includes a month a day a year and the hour and minutes in that point in time The years on the time circuits were limited to four digits and there were no possible negative years that could be reached i e years before 0 A D 1 B C This means the DeLorean could travel to any time from 12 00 am on January 1 1 B C to 11 59 p m on December 31 A D 9999 It is unknown what would happen if one were to travel to the latter date since after only one minute it would be the year A D 10000 and the time circuits would no longer be able to show the present time The destination time display shows the date that the operator wants the DeLorean to go to when the operator types in a date using the keypad in the DeLorean it will be shown in the destination time display the present time display shows the DeLorean s current location in time and the last time departed display shows what point in time the DeLorean originally was after making a journey through time Doc demonstrated its capabilities to Marty after its first test giving two well known but erroneous dates as examples the signing of the Declaration of Independence July 4 1776 and the birth of Christ December 25 0000 He also used the day that he invented time travel November 5 1955 During the second film because of Biff Tannen s fiddling after he steals the DeLorean the time circuits began malfunctioning displaying January 1 1885 in the destination time display A bolt of lightning triggered the malfunction to send the DeLorean from 1955 to 1885 Though the vehicle was in mid air the spin created by the lightning bolt allowed it to reach 88 mph Doc was trapped in 1885 and repairs were impossible because the time circuit control microchip which powered the time circuits was destroyed by the lightning bolt and suitable replacement parts would not be invented until at least 1947 Doc placed repair instructions and a schematic diagram in the time machine to enable his 1955 counterpart to repair it using components from that era which included vacuum tubes before boarding it up within a silver mine He then wrote Marty a letter explaining the situation and handed it over to Western Union with instructions to deliver it to Marty in 1955 Mr Fusion Edit A replica of the DeLorean time machine s Mr Fusion Home Energy Reactor The Mr Fusion Home Energy Reactor is the name of a power source used by the DeLorean time machine in the Back to the Future trilogy It can be seen for the first time at the end of Back to the Future when Doc pulls into the McFly s driveway after a trip to the year 2015 It is a parody of Mr Coffee machines which were very popular at the time of filming 10 The appliance from which the prop was made was actually a Krups Coffina model coffee grinder The Mr Fusion Home Energy Reactor converts household waste to power for the time machine s flux capacitor and time circuits using nuclear fusion presumably cold fusion In the film Mr Fusion allows the DeLorean time machine to generate the required 1 21 gigawatts needed to travel to any point in time The energy produced by Mr Fusion replaces plutonium as the primary power source of the DeLorean s time travel allowing the characters to bypass the arduous power generation requirements upon which the plot of the first film hinges The plutonium fission reactor was most likely left installed underneath Mr Fusion as a backup power source 2 3 The Mr Fusion can provide enough power to the flux capacitor and the time circuits but is not used to power up the DeLorean itself which makes use of an ordinary gasoline combustion engine to reach the 88 mph speed necessary for it to time travel This limitation proved crucial in the third movie when Doc and Marty find themselves stuck in 1885 and unable to drive the DeLorean due to a punctured fuel line The vehicle s hover system is powered by Mr Fusion and is capable of bringing the DeLorean up to the required 88 mph the combustion engine was also probably left on board as a backup However the flight systems were destroyed as a result of a lightning strike leaving Marty to rely on the original combustion engine which in turn was disabled Fictional timeline EditFor most of the first film the 1 21 gigawatts are supplied by a plutonium powered nuclear fission reactor and with the absence of plutonium a bolt of lightning channeled directly into the flux capacitor by a long pole and hook in the film s climactic sequence 2 At the end of the first film and for the remainder of the trilogy the plutonium nuclear reactor is replaced by a Mr Fusion Home Energy Reactor generator possibly acquired in 2015 3 The Mr Fusion device apparently converts household waste into electrical power the name suggests nuclear fusion Due to a hover conversion made in 2015 the car also becomes capable of hovering and flight though it lost this ability at the end of the second film 3 4 History Edit After purchasing the DeLorean it is unknown who or where Doc bought it from and modifying it into a time machine Doc brought it to the Twin Pines Mall and tests it out by using a remote control to send it one minute into the future with his dog Einstein in it leaving its license plate behind He also shows Marty the major functions of the DeLorean the flux capacitor the time circuits and the plutonium chamber that powers them After refueling the time machine with plutonium stolen from Libyan terrorists who previously stole the plutonium from a power plant Doc prepares to travel into the future but the Libyans unexpectedly arrive and shoot Doc Marty uses the DeLorean to flee from the Libyans and is transported to 1955 after accidentally activating the time circuits but without the plutonium that is needed to power it Once there Marty flees from Old Man Peabody who thinks he s an alien crushing one of his baby pine trees in the process and stops in an undeveloped area Due to problems with the starter and with the plutonium chamber empty Marty is forced to hide the DeLorean behind a sign and cover it with branches to keep anyone from seeing it Marty later shows it to 1955 Doc who then has it brought back to his workshop At one point they had to cover the DeLorean with a tarp to keep Lorraine Baines Marty s future mother from seeing it Unable to obtain plutonium Marty and 1955 Doc after reading a 1985 flyer that Marty had with him following his trip to 1955 decide to harness the power of a lightning strike that will happen one week later to power the flux capacitor in order to send Marty back to 1985 Doc installs a cable leading from the top of the Hill Valley Courthouse which is where the lightning will strike down to the street as a means to harness the lightning strike and attaches a long pole and hook to the DeLorean to channel the lightning strike into the flux capacitor once the hook makes contact with the cable while the DeLorean is accelerating at 88 mph He also places an alarm clock on the DeLorean s dashboard which is set to ring to signal Marty to drive towards the cable at 88 mph Doc brought the DeLorean still covered under the tarp to the Courthouse to make preparations While doing this a cop nearly discovers the time machine before Doc stops him pretending that it is specialized weather sensing equipment When the plan is put in motion complications arise due to the DeLorean undergoing another starter problem and the cable being disconnected by a fallen branch Despite these major setbacks the plan succeeds sending Marty back to 1985 ten minutes before his original departure Marty had reset the DeLorean to return to 1985 earlier so he would have a chance to warn Doc of his upcoming death since 1955 Doc wouldn t listen to Marty s warnings This event resulted in two DeLoreans existing in 1985 at the same time one used by the new timeline s Marty to escape from the Libyan terrorists and then disappearing to 1955 and the other appearing with the original Marty following his trip from 1955 to 1985 After returning to 1985 the DeLorean once again suffers another starter problem forcing Marty to run to the Twin Pines Mall now called Lone Pine Mall due to Marty s actions in 1955 He arrives too late as Doc is gunned down and watches his counterpart escape to 1955 in the other DeLorean while the Libyans crash into a photo booth but it is revealed that Doc s death was averted since he had listened to Marty s warning after all After recovering the DeLorean which apparently had its starter fixed and taking Marty home Doc travels to October 21 2015 with Einstein where he upgrades the DeLorean with 2015 technology replacing the plutonium chamber with a Mr Fusion Reactor outfitting a barcode license plate on the back and giving it the ability to fly but briefly returns to 1985 to pick up Marty who brings his girlfriend Jennifer Parker along and get him to help stop his future son from committing a crime While there the DeLorean is stolen by Biff Tannen who discovers that it s a time machine who then travels back to November 12 1955 the same day as the climax of the first film to give his past self a sports almanac to be used for gambling Once Biff returns to 2015 without Doc knowing Doc Marty Jennifer who has fallen unconscious after seeing her future self and Einstein return to 1985 but find themselves in an alternate timeline where Hill Valley is ruled by Biff that Doc describes as 1985A alternate 1985 Because of Biff s tampering the time circuits have malfunctioned displaying random dates After learning of 2015 Biff s actions Marty and Doc travel back to 1955 to restore the timeline 3 Upon arrival the DeLorean is hidden behind the same sign that Marty hid the DeLorean in the first film During the mission Marty had to wait for 2015 Biff to return to 2015 in his DeLorean in order to retrieve the almanac without 2015 Biff knowing and to prevent further changes to the timeline Doc later uses the DeLorean to pick up Marty accidentally switching on the malfunctioning time circuits and chase down Biff where they recover and destroy the almanac but Doc is unable to land the DeLorean due to strong turbulence It is struck by lightning again in the very same electrical storm this time by accident According to writers Bob Gale and Robert Zemeckis the lightning causes the DeLorean to spin at 88 miles per hour 11 and Doc later states in a letter to Marty that the bolt caused a gigawatt overload which shorted out the time circuits and destroyed the flying circuits 4 The lightning strike causes the DeLorean to disappear from 1955 traveling back in time to January 1 1885 earlier in the film Doc mentions that the time circuits are not functioning correctly several instances in the film that show the destination time circuit displaying January 1 1885 as the destination when the time circuits malfunctioned 3 Once in 1885 the DeLorean is hidden in a mine because suitable replacement parts to replace its destroyed microchip will not be invented until 1947 presumably referring to the transistor invented in that year 1955 Doc and Marty recover the DeLorean from the mine and 1955 Doc builds a vacuum tube circuit assembly to replace the destroyed microchip circuitry and restore the vehicle s time travel capabilities The tires have disintegrated in storage so 1955 Doc replaces them with whitewalls The gasoline engine is still functional but the flying circuits are not Due to the events in the first two films a total of four DeLoreans existed at the same time in 1955 the first in 1955 Doc s lab taking place during the events of the first film the second hidden somewhere by 2015 Biff after stealing the DeLorean in 2015 the third used by Doc and Marty to travel to 1955 and undo the changes caused by 2015 Biff and the fourth hidden in the mine only existing after Doc is transported to 1885 In a letter Doc wrote to Marty in 1885 Doc states he is happy in his new life there and requests that Marty not attempt to retrieve him but instead to return to 1985 and destroy the DeLorean believing that it has brought them and the world nothing but disaster However Marty and 1955 Doc learn of the tragedy that will come to Doc s way when he is murdered by Biff s grandfather Buford Mad Dog Tannen on September 7 1885 therefore 1955 Doc agrees to send Marty back to 1885 to rescue his future self This resulted in two DeLoreans existing in 1885 the one hidden in the mine after Doc is sent to 1885 by the lightning strike and the one that Marty uses to travel to 1885 to rescue Doc When Marty arrives in 1885 the DeLorean s fuel line is damaged while driving off road during a Native American attack and is forced to hide it in a cave He and Doc later recover it and patch up the line When Clara Clayton came to see Doc the DeLorean is once again hidden under a tarp so Clara cannot see it They attempt to use whiskey as a replacement fuel since commercial gasoline is not yet available the test fails destroying the fuel injection and ignition systems and leaving the car unable to travel under its own power They try using horses as an alternate means to get the car up to 88 mph but this fails since the horses top speed is approximately 30 mph They then decide to use a steam locomotive to push the DeLorean up to 88 mph After speaking to the train engineer they learn that in order for the locomotive to reach 88 mph it would have to be on a straight track with a flat surface with no cars coupled behind it and with the boiler heated up to dangerous levels After stealing the locomotive Doc had his version of Presto Logs pressed wood treated with anthracite added to the boiler to provide the extra power needed to push the car up to 88 mph Doc also replaces the 1955 style wheels with cast iron train wheels that fit on the track rails before loading the DeLorean onto the tracks and uses the old tires and a wooden support to cushion the locomotive s cow catcher and the car s rear end Since each of the three Presto Logs fire at different intervals with increasing power Doc installs a boiler temperature gauge on the DeLorean s dashboard to indicate when the car will experience a sudden burst of acceleration Marty and Doc make the run on a flat straight section of track leading to an unfinished bridge over Shonash Ravine which would have been renamed Clayton Ravine if Marty and Doc have not saved Clara from falling in earlier once the car reaches 88 mph the Mr Fusion unit provides the power required to activate the flux capacitor and make the jump through time 4 Upon reaching the end of the track the DeLorean disappears to 1985 with Marty with Doc staying behind with Clara while the locomotive falls down the cliff and is destroyed in the explosion When the DeLorean makes its final trip to 1985 it lands on the now completed bridge and crosses over Shonash Ravine now called Eastwood Ravine due to the townsfolk believing that Clint Eastwood the name that Marty used in 1885 fell in and was killed before coasting to a stop Marty bails out seconds before it is struck and destroyed by an oncoming freight train Later Doc Clara and their children Jules and Verne appear in the same location where the DeLorean was destroyed piloting a new time machine in the form of a steam powered train After picking up Einstein the couple and their children depart for an unknown time period Other elements Edit The time circuits in a replica time machine In the films the DeLorean time machine is a licensed registered vehicle in the state of California where the films take place The vanity license plate used in the film reads OUTATIME a deliberate anomaly as the maximum number of symbols on California plates is seven characters 2 When Doc returns from 2015 it is a barcode license plate 2 3 which implies that by that year license plates have moved to other more sophisticated means of tracking and registering Animated Series Edit In The Animated Series Doc builds another DeLorean into a time machine restoring most of its features including Mr Fusion and the hover conversion Doc either rebuilds the one destroyed at the end of Part III or he simply builds a new one He also seemingly adds the capability to travel through space in addition to time i e appear at a different location from the one it departed similar to the TARDIS from Doctor Who The cartoon DeLorean time machine has many add ons including a back seat in normal two door mode the ability to transform into a four door a pop out covered wagon top a blimp a rear video screen and a voice activated time input Back to the Future The Game Edit Back to the Future The Game features a chronal duplicate of the original DeLorean which Doc Brown recovered from the timestream after the destruction of the original This DeLorean is created at the end of Back to the Future Part II when the original time machine was struck by lightning while the DeLorean itself is sent to 1885 a fully functional duplicate appears apparently unmanned and undamaged in 2025 where Doc retrieves it with the Time Train before Griff Tannen could This Clone DeLorean is effectively the same as the Part II one including the occasional glitches in the time circuits mostly affecting the last time departed time display but with a new automatic retrieval feature that automatically brings the Clone DeLorean to a set time and location of Doc s choosing every time Doc doesn t return to the car in a fixed amount of time The original DeLorean made a brief appearance in Marty Mcfly s nightmare where Doc sends it one minute into the future which copies the events of the first film The only difference is that it does not return from its one minute trip 12 The Clone DeLorean appears outside of Doc s house after Marty recovers Doc s notebook from Biff Tannen Inside is Einstein a tape recorder with a message from Doc that tells Marty about the automatic retrieval system and a mysterious shoe After learning that Doc is stuck somewhere in time he activates the time circuits but the last time departed time display is faulty forcing Marty to use Einstein and the shoe to find out Doc s whereabouts He eventually learns that Doc is in 1931 and will be killed by Irving Kid Tannen Biff s father Marty travels to 1931 one day before Doc s death appearing in the middle of a police chase the glitch in the time circuits is resolved after the police car bumps into the Clone DeLorean After getting away from the police he hides the Clone DeLorean behind a sign After rescuing Doc they prepare to return to 1986 but Marty discovers that he is disappearing it turns out his grandfather Artie Mcfly will be killed by Kid as a result of Marty s earlier actions Upon being caught by Officer Danny Parker Marty swipes the DeLorean keys and travels several hours back with Doc staying behind to rescue Artie from Kid to ensure his existence before he and Doc return to 1986 but find themselves in a dystopian future which was brought into existence due to Kid not being arrested Marty and Doc return to 1931 to correct the timeline Doc hides the DeLorean in the DeSoto Lot to ensure that no one can find it and later uses it to get Einstein down from the Courthouse but their actions resulted in the creation of a second dystopian future with Doc disappearing from existence After returning to 1986 Marty crashes the Clone DeLorean into a billboard and after he gets out breaking the window in the process the Clone DeLorean falls through the billboard and crashes onto the ground becoming badly damaged Marty uses one of its wheels and a battery to get over a nearby wall The Clone DeLorean is later restored by an alternate version of Doc Brown who took six months to repair it who has never developed time travel technology having access to limited notes about the flux capacitor After traveling six months back in time he picks up Marty and they return to 1931 As such the time circuits of the alternate Clone DeLorean become even more glitchy resulting in them arriving two months late accumulating errors as severe as the interval of time traveled with increasing damage with every time travel attempt as such Citizen Brown the alternate version of Doc has to install a diagnostic console made of materials available in 1931 appearing as a plywood box with a diagnostic lightbulb and three similar bulbs placed on the coils on the outer body 13 Apparently part of the problem is chromium parts becoming unstable during time travel according to Citizen Brown After a falling out between the duo Citizen Brown leaves in the alternate Clone DeLorean and picks up Edna Strickland one of the game s main villains having decided to have her help change his younger self s career after learning of Edna s unhappy future Marty foils their attempts leading Edna to steal the alternate Clone DeLorean with Officer Parker in pursuit The original Doc arrives in the original Clone DeLorean as Citizen Brown disappears from existence due to earlier events in the game i e because Marty restored the original timeline the events of all three films the original Doc and Clone DeLorean are brought back into existence Officer Parker nearly arrests Marty and Doc for allegedly having the car that Edna got away in After they explain to him that there is more than one DeLorean Marty explains to Doc that the alternate Clone DeLorean had malfunctioning time circuits To make matters worse the entire town of Hill Valley disappears around them Edna had unwillingly time traveled to 1876 They go to Mary Pickford s house and see that the alternate Clone DeLorean had been destroyed After they get information from Mary who was really Edna they go to 1876 After they stop the fire that would ve burned down Hill Valley they chase down Edna who is trying to get away in the alternate Clone DeLorean Marty hoverboards to Edna s DeLorean and synchronizes the two DeLoreans by attaching signal dishes called flux synchronizers over the diagnostic lightbulbs on Edna s DeLorean and pointing them at the receiving dish on Doc s DeLorean which was apparently attached to its front hood recently which is flying behind the one that Edna is driving While doing this Edna unsuccessfully tries to shake Marty off as he moves around her DeLorean Their actions result in Edna s DeLorean suffering minor damages the rear mirror being damaged one of its windshield wipers being torn off and the Mr Fusion Reactor being knocked open although Marty manages to close it Once Marty finishes this task he returns to Doc s DeLorean as they begin their return to 1931 activating the flux capacitor on Edna s DeLorean and making it speed up to 88 mph with its time circuits set to 1931 After they all return to 1931 Edna crashes in front of the police station and is then arrested by Officer Parker for her crimes Edna s DeLorean then vanishes because of the time ripples catching up with them causing chronal decay i e since Citizen Brown s timeline ceased to exist the alternate Clone DeLorean was erased from existence Marty and Doc return to 1986 where three DeLoreans one normal one blue and one black suddenly arrive with different versions of Marty The duo leave the Martys arguing before departing to an unknown time in their own DeLorean 14 It is implied that the Time Train stays with Clara Jules and Verne passingly mentioned as enjoying the same nomadic life around the time stream of Doc but it is never seen in the game 12 14 Back to the Future The Ride Edit In Back to the Future The Ride Doc who now lives in a lab called the Institute of Future Technology had created an 8 passenger DeLorean that can fly just like the original DeLorean which can be seen in the ride and in the outside display and the Time Train which can only be seen in display outside of the attraction Unlike the original DeLorean the flux capacitor is in the front of the cockpit along with a small screen the time circuits the keypad and the speedometer It is also equipped with a sub ether time tracking scanner that allows Doc to pinpoint the location of the original DeLorean in time The original DeLorean is shown to have its original OUTATIME license plate instead of the bar code license plate but it could just mean that this DeLorean is actually a new one being built into a time machine Doc can be seen traveling in the original DeLorean in the ride s queue videos In the attraction Biff Tannen who stowed away in one of the institute s time machines that had recently visited 1955 steals the original DeLorean prompting Doc to send the riders to the 8 passenger DeLorean and use it to go after Biff The ride begins with the 8 passenger DeLorean traveling to 2015 Hill Valley where it chases Biff across the town Biff and the riders then travel to the ice age where the 8 passenger DeLorean experiences a temporally engine failure after Biff causes an avalanche that damages it The 8 passenger DeLorean catches up to Biff in the Cretaceous Period Biff s DeLorean gets damaged by a T Rex and lands in a volcano while the T Rex swallows the 8 passenger DeLorean but spits it back out The 8 passenger DeLorean lands in the lava and follows Biff as he goes over a cliff The riders then bump into him sending both DeLoreans back to 1991 In a post credits scene Clara Clayton who has built the Time Train with Doc reveals to have currently repaired the DeLorean and travels back to 1947 to a farm Doc Brown Saves the World Edit In Doc Brown Saves the World there was a repaired DeLorean time machine which included new replacement parts from 2015 The DeLorean is also seen in a video promoting Doc Brown Saves the World and it is unknown as to whether or not a flux capacitor was inside Time Train EditThe Time Train was a second time machine that appears at the end of Part III which is powered by steam instead of gasoline Doc built it out of a steam locomotive It homages the submarine Nautilus from Jules Verne s novel Twenty Thousand Leagues Under the Seas It took Doc ten years to build it The flux capacitor is inside the chimney headlamp at the front of the locomotive The time circuits appear as rotating dials that are identical to the DeLorean s time circuits though are not clearly seen in the film The sides of the cabin which display Doc s initials ELB are capable of opening the same way as the DeLorean s gullwing doors but can also deploy stairs that allow people to climb on board Its tender also has vents which function the same way as the DeLorean s How Doc was able to create the flux capacitor and time circuits for the Time Train in 1885 is unexplained but it is assumed that Doc used parts from the hoverboard that Marty left behind in 1885 and the broken DeLorean that was buried in the mine to build them all while ensuring that Marty and his 1955 counterpart would be able to repair it Unlike the DeLorean the external components of the Time Train were symmetrical on both sides of the vehicle possibly representing a more sophisticated grasp of the time travel technology on Doc s part despite being constructed from more primitive materials Interestingly before the Time Train appeared in 1985 it triggered the bells and gates on the nearby railroad crossing as if another train was coming This could mean that the Time Train is so powerful that it enables a connection with its destination time even before arriving to that point of time Following its completion and its first time travel test Doc and his family traveled to 2015 and beyond to give it a hover conversion allowing it to fly just like the DeLorean When Doc returned to 1985 to pick up Einstein and meet up with Marty and Jennifer he chose the most likely place that they might be at that given time the site of the DeLorean s destruction After introducing his sons Jules and Verne and giving Marty a picture of him and Doc in 1885 Doc activates the train s flying capabilities and departs to an unknown time Cars used in filming EditUniversal Studios special effects department built three main DeLorean time machines for the movie Back to the Future The film s producers characterized the DeLoreans with three names the A car B car and C car The A car also known as the Hero car was the most detailed and utilized vehicle during production 15 After filming was over the A car was delivered to Universal Studios Hollywood as an attraction piece As time passed visitors started taking parts off the vehicle and wandering off with them Bob Gale selected a team to repair the car so it could be in a perfect condition The vehicle is currently being displayed at the Petersen Automotive Museum in Los Angeles 16 The B car also known as the Stunt Car used in all three movies was mainly used for stunts After purposely being struck by a train during production the car was left as a pile of rubble Movie car customizer Jay Ohrberg used the B car wreckage to construct various DeLorean replicas The B car s body panels were sold to Planet Hollywood Hawaii where it was hooked up on the ceiling of the restaurant until its shutdown in 2010 The car was sold at auction to Bill and Patrick Shea after Back to the Future HQ reached out to Planet Hollywood to find the car s remains The stunt car is currently being displayed at Hubbardston Massachusetts 17 18 The C car was used for interior footage and was torn apart so the camera could fit inside the car The vehicle was left at Universal Studios Hollywood many of its parts were put together on a replica remodeled by Tom Talmon Studios for Universal Japan Universal Japan sold the car to a private company and the vehicle is currently being displayed on the company s entryway 18 There were three extra DeLoreans used through the production of the sequels The fiberglass car used on special effects was reportedly destroyed The stunt train better known as The Oxnard Car was displayed in Universal Studios Florida from the early 1990s to 2020 The studio decided to replace the original car with a replica to be stored for restoration The desert car with the blue cross over tube was left at Universal Studios Hollywood Tom Talmon Studios used parts of this car on a replica displayed on Universal Japan After Japanese workers stole some of the car props ScreenUsed acquired the car for restoration and then settled the car for auction Bill and Patrick Shea ended up buying it and they placed the car on display at Hubbardston Massachusetts 17 Development Edit Inside the cabin facing front Inside the cabin facing rear The time machine went through several variations during production of the first film Back to the Future In the first draft of the screenplay the time machine was a laser device that was housed in a room at the end of the draft the device was attached to a refrigerator and taken to a nuclear bomb test Spielberg vetoed the idea concerned that children might attempt to climb into one 19 Zemeckis suggested the DeLorean because it offered mobility a unique design and would appear like an alien UFO to a 1950s family 20 21 22 23 24 due to its characteristic gullwing doors which were inspired by the Mercedes Benz 300 SL The original ending of the 1985 film Back to the Future was to have Marty outrun a nuclear explosion at a test site to power the DeLorean s flux capacitor in order to travel back to 1985 However during the movie s filming it went overbudget and behind schedule and Universal refused to grant the producers anymore money as it couldn t afford the desert location to shoot such scenario Ultimately the power source was changed to the lightning strike at the clock tower in Hill Valley as a result 25 The DeLorean was developed under the supervision of Lawrence Paull 26 who designed it with artist Ron Cobb and illustrator Andrew Probert 27 28 They intended for the vehicle to look fixed together from common parts 26 The Ford Motor Company offered 75 000 to use a Ford Mustang instead Gale responded that Doc Brown doesn t drive a fucking Mustang 21 Michael Fink was hired as the art department liaison and tasked with realizing Cobb s sketches and overseeing the car s construction Paull and Canton who had worked with him on Blade Runner 1982 and Buckaroo Banzai 1984 respectively recruited him Fink had a project lined up but agreed to help in the free weeks he had remaining 26 Three DeLoreans used were purchased from a collector one for stunts one for special effects and one for normal shots 27 29 They were unreliable and often broke down 21 88 mph 142 km h was chosen as the time travel speed because it was easy to remember and looked cool on the speedometer 30 A custom speedometer was built to simulate 88 mph as a 1979 law passed by then President Jimmy Carter had limited speedometers to 85 mph to reduce speeding 28 The Flux Capacitor necessary for time travel was called the Temporal Field Capacitor Zemeckis said the name was not believable From his work on the 1979 drama The China Syndrome Fink had learned of Neutron flux He and Zemeckis simultaneously suggested renaming it the Flux Capacitor Cobb and Probert had already placed the Flux Capacitor on the external and interior roof of the DeLorean Fink placed it next to the driver 26 Fink constructed the device using a NEMA box and backlit Torr High Voltage relays The time display was constructed from LMB boxes When Fink left he picked Michael Scheffe to replace him Scheffe finished the Flux Capacitor build and built the Mr Fusion replacement power supply out of a Krups coffee grinder 26 The flying DeLorean used a combination of live action footage animation and a 1 5 scale approximately 33 inches 840 mm long model built by Steve Gawley and the model shop crew and filmed against a blue screen 31 32 Months were spent building the model from epoxy steel and aluminum Halogen lamps were fitted to the tires to simulate thrusters the tires were made from aluminum to withstand the heat 32 33 Blue chalk was rubbed on the windscreen to conceal the lack of riders 32 the last effect produced by ILM 34 The act of the DeLorean traveling through time is referred to as the time slice effect Zemeckis only knew that he wanted it to be a violent transition He described it like a Neanderthal sitting on the hood of the DeLorean and chipping away the fabric of time in front of him 35 He suggested a crack in time opening before the car but animators could not determine what would be on the reverse of the opening visible to the audience An electrical effect enveloping the car was abandoned because a similar process had been used in the science fiction film The Terminator 1984 36 Other ideas included a wave of energy that moved over the car before exploding and blowing open a hole in time and a cubist effect where the car would break into separate segments each individually expanding in proportion before disappearing Takahashi developed artwork showing the segments popping out from the DeLorean and glowing Gale liked the effect but Zemeckis did not Spielberg found it unrealistic 36 35 Takahashi animated separate effects like contrails and flashing lights Zemeckis opted to use them all 35 The effects were drawn in black and white and optically manipulated afterward This resulted in the DeLorean appearing to emit various effects that strike in front of the car to create an explosion that opens the time slice This was combined with practical effects including smoke sparks and flash bulbs 36 Fire emitting from the tires was intended to start the sequence but the gas jet mechanism repeatedly failed it only functioned for two of the six shots required 37 Peggy Regan animated flames and reflections for consistency 38 The trails of fire left behind the DeLorean were practical but the actual movement was slow The footage was sped up and smoke added where the car disappeared Fox and Lloyd were filmed against a reflective mylar blue screen set to match the car park s wet surface and composited into the trails of fire 36 32 Reflections of the actors were matte paintings filmed through a ripple glass to add texture 36 A stuntman in a dog suit portrays Doc s dog when in the moving car 39 It was suggested that the DeLorean emerge from the time slice in sections that slam into each preceding section Norwood and Charlie Mullen outlined an animation and Ellen Lichtwardt animated a glow to the vehicle The effect is so quick as to be imperceptible Zemeckis preferred this as he did not want the audience to think too much about how everything worked 38 Different parts from three 1982 DeLoreans were used in the first film Liquid nitrogen was poured onto the car for scenes after it had traveled through time to give the impression that it was cold The base for the nuclear reactor was made from the hubcap from a Dodge Polara Aircraft parts and blinking lights were added for effect In one of the first scenes carbon dioxide extinguishers were hidden inside the DeLorean to simulate the exhaust effect 40 Ultimately five real DeLoreans were used in the filming of the trilogy plus one process car built for interior shots In the off road scenes in the third film a modified for off road VW Beetle frame was fitted to the DeLorean with the whitewall tires and baby Moon hubcaps 41 A seventh DeLorean was also used in the filming but this one was merely a full sized fiberglass model used for exterior shots where the vehicle hovers above the set as well as when the actors interact with the vehicle 42 While the original PRV V6 engines were retained in the physical cars for filming the film s sound effects artists used the sound of a Porsche 928 V8 and the Star Wars s landspeeder for the engine sounds in the movie 43 Replicas Edit Two DeLorean time machine replicas As of November 2021 approximately 122 DeLoreans are known to be converted to Back to the Future Time Machines 44 References Edit a b Back to the Future 13 things you may not know The Telegraph October 30 2016 a b c d e f g h i j k l Back to the Future DVD 1985 a b c d e f g h Back to the Future Part II 1989 a b c d e f Back to the Future Part III 1990 Back to The Future Script PDF Retrieved February 5 2021 definition and pronunciation of gigawatt Merriam Webster Feb 2008 April 25 2007 Retrieved March 8 2010 A Practical Guide to the International System of Units U S Metric Association Feb 2008 Lamar colostate edu April 5 2006 Archived from the original on June 13 2010 Retrieved March 8 2010 Chang Richard S You Say Gigawatt I Say Jigowatt The New York Times blog April 8 2008 AMT ERTL Back to the Future DeLorean Time Machine Model Kit Instruction Manual PDF Scalemates 1991 Archived PDF from the original on July 30 2022 Retrieved July 30 2022 Andersen Kent Saving Planet Earth A Practical Hands On Approach 2008 p 101 From the Official Back to the Future FAQ by Bob Gale and Robert Zemeckis question 1 16 a b Back to the Future The Game Chapter 1 It s About Time Back to the Future The Game Chapter 4 Double Visions a b Back to the Future The Game Chapter 5 Outatime Concotelli Steve director OUTATIME Saving the DeLorean Time Machine Virgil Films July 19 2016 www outatimemovie com Petersen Automotive Museum Archived from the original on March 20 2016 a b Silknitter Tom BTTF3 DeLorean Sept 2010 bttf3delorean com Where are they html a b Jay Gearan Correspondent Back to the Future Still No 1 with Hubbardston Father Son Telegram com Telegram com January 8 2017 www telegram com news 20170107 back to future still no 1 with hubbardston father son Sciretta Peter July 15 2009 How Back To The Future Almost Nuked The Fridge Slashfilm Archived from the original on August 4 2012 Retrieved September 10 2020 Holleran Scott November 18 2003 Brain Storm An Interview with Bob Gale Box Office Mojo Archived from the original on December 6 2008 Retrieved September 8 2020 a b c Koknow David June 9 2015 How Back to the Future Almost Didn t Get Made Esquire Archived from the original on July 26 2016 Retrieved July 14 2016 Bahiana Ana Maria October 21 2015 An Oral History of Back to the Future by Robert Zemeckis goldenglobes com Archived from the original on June 24 2019 Retrieved September 1 2020 Zemeckis Robert Gale Bob 1985 The making of Back to the Future VHS Universal Pictures Zemeckis Robert Gale Bob 2002 Back to the Future The Complete Trilogy DVD commentary for part 1 DVD Universal Pictures Tales From the Future 2010 DVD Blu ray set documentary a b c d e Interview Special Effects Consultant Michael Fink BacktotheFuture com Archived from the original on August 7 2020 Retrieved September 20 2020 a b Pourro 1985 p 56 a b Anders Charlie Jane June 17 2015 11 Incredible Secrets About The Making Of Back To The Future io9 Archived from the original on February 29 2020 Retrieved September 15 2020 Gaines 2015 p 63 Back to the Future 13 things you may not know Telegraph co uk October 21 2015 Archived from the original on February 6 2020 Retrieved September 15 2020 Pourro 1985 pp 66 67 a b c d Turner George E March 20 2020 Back to the Future Wheels on Fire American Cinematographer Archived from the original on March 28 2020 Retrieved September 18 2020 Pourro 1985 p 66 Pourro 1985 p 67 a b c Failes Ian October 21 2015 The future is today how ILM made time travel possible Fxguide Archived from the original on July 1 2016 Retrieved June 12 2016 a b c d e Pourro 1985 p 60 Pourro 1985 pp 60 62 a b Pourro 1985 p 62 Bui Hoai Tran October 21 2015 15 things you probably didn t know about Back to the Future USA Today Archived from the original on September 16 2020 Retrieved September 16 2020 Back to the Future Trilogy DVD Production Notes Klastorin Michael Hibbin Sally 1990 Back to The Future The Official Book of The Complete Movie Trilogy Hamlyn p 40 ISBN 0 600 57104 1 6 DeLoreans including one process car which can be dismantled for easy access and a lightweight fiberglass model were used in the filming Klastorin Michael Hibbin Sally 1990 Back to The Future The Official Book of The Complete Movie Trilogy Hamlyn p 43 ISBN 0 600 57104 1 A lightweight full size fibreglass DeLorean was built complete with radio controlled wheels This DeLorean was flown by wires with the aid of a crane Back To The Future Creating The Time Machine archived from the original on February 3 2019 retrieved September 28 2020 Texas DeLorean Owners Sources EditBoyd Matt The Back to the Future DeLorean in DieCastX Magazine Spring 2007 p 98 De Santis Solange Steven Spielberg Builds a Time Machine in Popular Mechanics August 1985 pp 84 87 132 Iaccino James F Jungian Reflections within the Cinema A Psychological Analysis of Sci Fi and Fantasy Archetypes pp 81 89 Greenwood Publishing Group 1998 ISBN 0 275 95048 4 Kaku Michio Physics of the Impossible A Scientific Exploration Into the World of Phasers Force Fields Teleportation and Time Travel Random House Inc 2008 ISBN 0 385 52544 3 McDermid Val A Suitable Job for a Woman Inside the World of Women Private Eyes Poisoned Pen Press 1999 ISBN 1 890208 15 9 Mowbray Scott Let s Do the Time Warp Again in Popular Science March 2002 pp 46 51 Nahin Paul J Time Machines Time Travel in Physics Metaphysics and Science Fiction Springer 1999 ISBN 0 387 98571 9 Ni Fhlainn Sorcha The Worlds of Back to the Future Critical Essays on the Films McFarland 2010 ISBN 0 7864 4400 2 Redmond Sean Liquid Metal the Science Fiction Film Reader pp 115 122 Wallflower Press 2004 ISBN 1 903364 87 6 Simpson Philip Utterson Andrew Shepherdson Karen J Film Theory Critical Concepts in Media and Cultural Studies Volume 2 Taylor amp Francis 2004 ISBN 0 415 25973 8 Sobchack Vivian Carol Screening Space the American Science Fiction Film Rutgers University Press 1997 ISBN 0 8135 2492 X Gaines Caseen 2015 We Don t Need Roads The Making of the Back to the Future Trilogy New York City New York Plume an imprint of Penguin Random House ISBN 978 0 14 218153 9 Pourro Janine November 1985 Backyard Adventures Spielberg Style Cinefex No 24 United States ISSN 0198 1056 External links Edit Media related to DeLorean DMC 12 in Back to the Future at Wikimedia Commons Retrieved from https en wikipedia org w index php title DeLorean time machine amp oldid 1140020782, wikipedia, wiki, book, books, library,

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